Originally posted by flyer The 4/3 sensor is smaller than the APS-C sensor, so there shouldn't be any problems using any Pentax lenses.
Originally posted by thibs Sure but how will you set the aperture value??
There could (in theory) be an adapter with an aperture ring that you could set an aperture preset for a DA lens, and could even give some feedback to the body so stop-down metering wasn't necessary. It would have an electronically actuated diaphragm lever to stop down the lens.
Sounds a bit complex and expensive, no?
But this is all fantasy that will never become reality. Even if, hypothetically, Pentax made a micro 4/3rds camera
and there was a clear demand for a niche product like this adapter, it would probably never be made.
Do they even make extension tubes any more? No.
Any chance of KAF2 mount being un-crippled? Nah.
New firmware for older DSLR models... anytime..? Unlikely.
Call me pessimistic, but I see this as realistic. I like to think that Pentax cares about its loyal users and all their old lenses, but I wouldn't put it past them to just make us buy a load of new lenses just because they can.